87178172341 has 16 divisors (see below), whose sum is σ = 94512046720. Its totient is φ = 79935024960.

The previous prime is 87178172329. The next prime is 87178172401. The reversal of 87178172341 is 14327187178.

It is a 9-Lehmer number, since φ(87178172341) divides (87178172341-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 87178172341 - 2¹¹ = 87178170293 is a prime.

It is the 295260-th Hogben number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87172172341) by changing a digit.

It is a nontrivial repunit in base 295259.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2056720 + ... + 2098678.

It is an arithmetic number, because the mean of its divisors is an integer number (5907002920).

Almost surely, 2^87178172341 is an apocalyptic number.

It is an amenable number.

87178172341 is a deficient number, since it is larger than the sum of its proper divisors (7333874379).

87178172341 is a wasteful number, since it uses less digits than its factorization.

87178172341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43036.

The product of its digits is 526848, while the sum is 49.

The spelling of 87178172341 in words is "eighty-seven billion, one hundred seventy-eight million, one hundred seventy-two thousand, three hundred forty-one".